Alarm-lock



(Model.) Sheets-Sheet I.

C. W. ZIEGLBR. Alarm Look.

No. 233,172. Patented Oct. 12,1880.

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N PETERS. FHTO-IJTHOGRAFNER. WASHINGTON D C.

(Model.) 2 Sheets-#Sheet 2. C. W. ZIEGLER.

Alarm Look.

No. 233,172` Patented Oct. 12, 1880.

NV PEreRs, FHOTOALITHOGRAPHER, wASHlNGTUN. D C

UNITED STATES PATENT GEEICE.

CHARLES W. ZIEGLER, OF PROVIDENCE, PENNSYLVANIA.

ALARM-LOCK.

SPEIFICATION forming part of Letters Patent No. 233,172, dated October 12, 1880.

Application tiled August f2, 1880.

To all whom 'it may concern:

Be it known that I, CHARLES W. ZIEGLER, residing at Providence, in the county of Lackawanna and State of Pennsylvania, and a citizen of the United States, have invented a new and useful Improvement in Alarms for Door Locks and Latches; and it consists in the construction and special combinations of parts thereof, as Will loe fully hereinafter described.

In the drawings, Figure 1 is a plan or top side view as inserted in a door. Figs. 2 and 3 represent detail construction of parts. Figs. 4 and 5 represent the actuating-shaft and its connections. Fig. 6 represents the inner end of the locking-bolt and its case. Fig. 7 represents the actuating devices to give an alarm, and Fig. S represents such devices thrown out of connection with the alarm, and the lockingbolt can he operated without sounding an alarm.

Arepresents the door edgewise, looking from `the top, in which the locking and alarm device is secured; A A', the common knobs by which the device is operated.

B is a slotted cylinder, of the length of the thickness of thedoor, having the open slot b on its side, and an internal or female screw thread, b', cut in its inner diameter.

b" b" are the common plates attached to the cylinder and upon each face of the door, to secure the device to the door.

C is the actuating-shaft, centrally located in the cylinder B, having tangs c or other appliances at each end, to which the knobs that 0perate the shaft are secured, and has a slot, c', Figs. 4. and 5, cut entirely through its diameter and in the central portion of its length. This shaft is smooth on its outer periphery.

D is a projecting pusher having a neck, d, that goes through slot b in cylinder B, and an annular thimble, d', that surrounds the shaft O, and over which shaft and within slot b it is forced to slide. The forward side, d, of this projecting pusher is inclined.

E E are cylindrical screw-nuts, the center bore of which fits the outside diameter of shaft G, and have screw-threads e c upon their outer peripheries, that screw into the screw-threads b on the inner side of cylinder B.

e c are screw-pins that go into holes in the nuts E, through the slot c in shaft C, and

(Model.)

screw into screw-threads in the opposite side of said nuts E. These nuts are screwed up to be against or near the circular thiinhle d of pusher D, and when in place are secured by said screw-pins e, when they will revolve with shaft U, and thereby force the projecting pusher forward or back, as the shaft C may he turned one way or the other.

F is a bolt-cylinder, which is inserted in the frame of the door A, on a line and in the same. plane with the pusher D, and has on its inner diameter a guide or feather, j', projecting inwardly, and is held in its place hy the liush face-plate j". that is screwed fast to the door.

G is the locking-bolt, its outer end fitting into and sliding freely7 within the inner diameter of cylinder F. The inner end of this bolt has an angular or inclined face, g, to meet the inclined face d" of pusher D, as seen in Fig. 1, and a longitudinal groove, g', is also made therein to fit onto feather fin cylinder G, to prevent the bolt from revolving in the cylinder. The central part of the length of this locking-bolt is of less diameter than the ends, and made so that a spiral spring, g4, around it will bear against a shoulder, g, on the inner end of th'e bolt, and the other end of the spring bears against a nut, H, Xed in cylinder F, and through which nut the bolt G freely slides, by which construction the bolt G will recede and become flush with the edge of the door when relieved from the pusher D.

The revolving shaft C extends through the door and through an alarm=bell known as Oorbins bell,7 and is connected' with the alarm mechanism of said bell, of which it is unnecessary to describe further than it affects this invention. On said shaft C, within the bell I, are radially-projectin g actuators J, that are caused, by the revolution of the shaft C, to strike against a curved pusher-plate, J', that is attached to the arm of the striking-hammer I', with a returning-spring back of it, so that as the actuators J force the pusher back while passing it in their revolution the spring will act to cause the hammer I to strike the bell as soon as the pusher is relieved from force by the projecting actuators.

In order to have the shaft C revolve without making an alarm, a switch-lever, L, is pivoted at l within the bell-case, which has a ICO notch, l', on its outer side to engage u lng, l, projecting upwnrd upon the pusher-plate J. and by lifting lever L out of the notch m in the base-plate of the bell and forcing it toward the lug I, and engaging with it nud forcing the pushcr-plnte back, und the lever into notch n1', the pusher-plate will be ont of the reach of theuctuators J in their revolution with shaft U, und when so out of the Way shaft (l can be revolved without. sounding the bell or giving nu alarm.

In operating the lock to force the holt G ont to lock the door, turn the outside knob to the right, or the inside knob to the left. This movement revolves the cylindrical nuts li, forcing the pusher I), with its inclined face 1 against the inclined fnce g of the bolt (l, :ind

as the shaft C continues to revolve und pusher I) advances against the incline of holt thc bolt continues to bc forced outv horizontally until the outer und protrndes beyond the edge of the door, as sven in Fig. 1 in broken lines.

Then the door is locked. und if the lever L is i in notch m ot' the buse-plate of the bell, thc bolt G cannot be thrown buck by revolving the shaft (l b v either ot the knobs A without the bell being struck in alarm that some one is trying to unlock the door, und .at every turn l of the shaft (l tive nlnrms will be given by the hammer on the hell; but when the switclrlcver L is turned back iorest in notch m' of the bnseplate of the bell the lockiug-bolt G can be turned buck :1nd unlock the door Without sounding an alarm. This construction of parts ndinitsot' setting the screw-nuts a. little farther `35 apart, so that by turning the shaft C, the ach uators J will act to sound the bell Without advancing pusher D, und so be used es an ordinary door-bell.

Having thus described my invention, what 4o I claim is- 1. The combination of the slotted cylinder B, with internal screw-thread, b', revolving slotted shaft U, screw-nuts E, and inclinedfaced projecting; pusher D, with the sliding,r locking-bolt having the inclined face g, all constructed to operate as and for the purpose described.

2. ln un alarm-lock for doors, the combination ot' the revolving slotted shaft C, pusher 5o 1),:1nd bolt G with the actuatorsJ, springpushcr J. hummer I, and bell I, constructed to operate us described.

3. In n door locking and alarm device heving n revolving,r sli-(ift, C, and actuators J, the combination ofthe pivoted switch-lever L with the pusher J und notch m" in base-plate of bell device, ns and for the purposes described.

CHARLES W. ZIEGLER. Witnesses:

l). (l. SEWARD, J. ll. FISH. 

